MDL-75137 mod_data: Redesign zero state page

Co-authored-by: Ferran Recio <ferran@moodle.com>

lang/en/moodle.php

@@ -38,6 +38,7 @@ $string['activityiscurrentlyhidden'] = 'Sorry, this activity is currently hidden
 $string['activityheader'] = 'Activity menu';
 $string['activitymodule'] = 'Activity module';
 $string['activitymodules'] = 'Activity modules';
+$string['activitynotready'] = 'Activity not ready yet';
 $string['activityreport'] = 'Activity report';
 $string['activityreports'] = 'Activity reports';
 $string['activityselect'] = 'Select this activity to be moved elsewhere';
@@ -267,6 +268,7 @@ $string['closebuttontitle'] = 'Close';
 $string['collapse'] = 'Collapse';
 $string['collapseall'] = 'Collapse all';
 $string['collapsecategory'] = 'Collapse {$a}';
+$string['comebacklater'] = 'Please come back later.';
 $string['commentincontext'] = 'Find this comment in context';
 $string['comments'] = 'Comments';
 $string['commentscount'] = 'Comments ({$a})';

mod/data/classes/manager.php

@@ -192,6 +192,19 @@ class manager {
         $event->trigger();
     }
 
+    /**
+     * Return if the database has fields.
+     *
+     * @return bool true if the database has fields
+     */
+    public function has_fields(): bool {
+        global $DB;
+        if ($this->_fieldrecords === null) {
+            return $DB->record_exists('data_fields', ['dataid' => $this->instance->id]);
+        }
+        return !empty($this->_fieldrecords);
+    }
+
     /**
      * Return the database fields.
      *

mod/data/classes/output/add_entries_action.php

@@ -0,0 +1,67 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace mod_data\output;
+
+use moodle_url;
+use templatable;
+use renderable;
+
+/**
+ * Renderable class for the Add entries button in the database activity.
+ *
+ * @package    mod_data
+ * @copyright  2022 Amaia Anabitarte <amaia@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class add_entries_action implements templatable, renderable {
+
+    /** @var int $id The database module id. */
+    private $id;
+
+    /**
+     * The class constructor.
+     *
+     * @param int $id The database module id.
+     * @param bool $hasentries Whether entries exist.
+     */
+    public function __construct(int $id) {
+        $this->id = $id;
+    }
+
+    /**
+     * Export the data for the mustache template.
+     *
+     * @param \renderer_base $output The renderer to be used to render the add entries button.
+     * @return \stdClass or null if the user has no permission to add new entries.
+     */
+    public function export_for_template(\renderer_base $output): ?\stdClass {
+        global $PAGE, $DB;
+
+        $database = $DB->get_record('data', ['id' => $this->id]);
+        $cm = get_coursemodule_from_instance('data', $this->id);
+        $currentgroup = groups_get_activity_group($cm);
+        $groupmode = groups_get_activity_groupmode($cm);
+
+        if (data_user_can_add_entry($database, $currentgroup, $groupmode, $PAGE->context)) {
+            $addentrylink = new moodle_url('/mod/data/edit.php', ['d' => $this->id, 'backto' => $PAGE->url->out(false)]);
+            $button = new \single_button($addentrylink, get_string('add', 'mod_data'), 'get', true);
+            return $button->export_for_template($output);
+        }
+
+        return null;
+    }
+}

mod/data/classes/output/empty_database_action_bar.php

@@ -0,0 +1,70 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace mod_data\output;
+
+use mod_data\manager;
+use moodle_url;
+use templatable;
+use renderable;
+
+/**
+ * Renderable class for the action bar elements for an empty database activity.
+ *
+ * @package    mod_data
+ * @copyright  2022 Amaia Anabitarte <amaia@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class empty_database_action_bar implements templatable, renderable {
+
+    /** @var manager The manager instance. */
+    protected $manager;
+
+    /**
+     * The class constructor.
+     *
+     * @param int $id The database module id.
+     */
+    public function __construct(manager $manager) {
+        $this->manager = $manager;
+    }
+
+    /**
+     * Export the data for the mustache template.
+     *
+     * @param \renderer_base $output The renderer to be used to render the action bar elements.
+     * @return array
+     */
+    public function export_for_template(\renderer_base $output): array {
+        global $PAGE;
+
+        $instance = $this->manager->get_instance();
+        $addentrybutton = new add_entries_action($instance->id);
+        $data = ['addentrybutton' => $addentrybutton->export_for_template($output)];
+
+        if (has_capability('mod/data:manageentries', $PAGE->context)) {
+            $params = ['d' => $instance->id, 'backto' => $PAGE->url->out(false)];
+
+            $importentrieslink = new moodle_url('/mod/data/import.php', $params);
+            $importentriesbutton = new \single_button($importentrieslink,
+                get_string('importentries', 'mod_data'), 'get', false);
+            $data['importentriesbutton'] = $importentriesbutton->export_for_template($output);
+        }
+
+        return $data;
+    }
+}
+

mod/data/classes/output/view_action_bar.php

@@ -64,16 +64,8 @@ class view_action_bar implements templatable, renderable {
             'urlselect' => $this->urlselect->export_for_template($output),
         ];
 
-        $database = $DB->get_record('data', ['id' => $this->id]);
+        $addentrybutton = new add_entries_action($this->id);
-        $cm = get_coursemodule_from_instance('data', $this->id);
-        $currentgroup = groups_get_activity_group($cm);
-        $groupmode = groups_get_activity_groupmode($cm);
-
-        if (data_user_can_add_entry($database, $currentgroup, $groupmode, $PAGE->context)) {
-            $addentrylink = new moodle_url('/mod/data/edit.php', ['d' => $this->id, 'backto' => $PAGE->url->out(false)]);
-            $addentrybutton = new \single_button($addentrylink, get_string('add', 'mod_data'), 'get', true);
         $data['addentrybutton'] = $addentrybutton->export_for_template($output);
-        }
 
         if (has_capability('mod/data:manageentries', $PAGE->context)) {
             $importentrieslink = new moodle_url('/mod/data/import.php',

mod/data/classes/output/zero_state_action_bar.php

@@ -0,0 +1,79 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+namespace mod_data\output;
+
+use mod_data\manager;
+use moodle_url;
+use templatable;
+use renderable;
+
+/**
+ * Renderable class for the action bar elements in the zero state (no fields created) pages in the database activity.
+ *
+ * @package    mod_data
+ * @copyright  2022 Amaia Anabitarte <amaia@moodle.com>
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+class zero_state_action_bar implements templatable, renderable {
+
+    /** @var manager The manager instance. */
+    protected $manager;
+
+    /**
+     * The class constructor.
+     *
+     * @param manager $manager The manager instance.
+     */
+    public function __construct(manager $manager) {
+        $this->manager = $manager;
+    }
+
+    /**
+     * Export the data for the mustache template.
+     *
+     * @param \renderer_base $output The renderer to be used to render the action bar elements.
+     * @return array
+     */
+    public function export_for_template(\renderer_base $output): array {
+        global $PAGE;
+
+        $data = [];
+        if (has_capability('mod/data:managetemplates', $PAGE->context)) {
+            $instance = $this->manager->get_instance();
+            $params = ['d' => $instance->id, 'backto' => $PAGE->url->out(false)];
+
+            $usepresetlink = new moodle_url('/mod/data/preset.php', $params);
+            $usepresetbutton = new \single_button($usepresetlink,
+                get_string('usepreset', 'mod_data'), 'get', true);
+            $data['usepresetbutton'] = $usepresetbutton->export_for_template($output);
+
+            $createfieldlink = new moodle_url('/mod/data/field.php', $params);
+            $createfieldbutton = new \single_button($createfieldlink,
+                get_string('newfield', 'mod_data'), 'get', false);
+            $data['createfieldbutton'] = $createfieldbutton->export_for_template($output);
+
+            $params['action'] = 'import';
+            $importpresetlink = new moodle_url('/mod/data/preset.php', $params);
+            $importpresetbutton = new \single_button($importpresetlink,
+                get_string('importpreset', 'mod_data'), 'get', false);
+            $data['importpresetbutton'] = $importpresetbutton->export_for_template($output);
+        }
+
+        return $data;
+    }
+}
+

mod/data/lang/en/data.php

@@ -78,6 +78,7 @@ $string['configenablerssfeeds'] = 'This switch will enable the possibility of RS
 $string['confirmdeletefield'] = 'You are about to delete this field, are you sure?';
 $string['confirmdeleterecord'] = 'Are you sure you want to delete this entry?';
 $string['confirmdeleterecords'] = 'Are you sure you want to delete these entries?';
+$string['createfields'] = 'Create your own fields to collect data, or use a preset which includes fields already.';
 $string['csstemplate'] = 'CSS template';
 $string['csvfailed'] = 'Unable to read the raw data from the CSV file';
 $string['csvfile'] = 'CSV file';
@@ -293,7 +294,7 @@ $string['nofieldindatabase'] = 'There are no fields defined for this database.';
 $string['nolisttemplate'] = 'List template is not yet defined';
 $string['nomatch'] = 'No matching entries found!';
 $string['nomaximum'] = 'No maximum';
-$string['norecords'] = 'No entries in database';
+$string['norecords'] = 'No entries yet';
 $string['nosingletemplate'] = 'Single template is not yet defined';
 $string['notapproved'] = 'Entry is not approved yet.';
 $string['notinjectivemap'] = 'Not an injective map';
@@ -389,6 +390,7 @@ $string['showall'] = 'Show all entries';
 $string['single'] = 'View single';
 $string['singleview'] = 'Single view';
 $string['singletemplate'] = 'Single template';
+$string['startbuilding'] = 'Start building your activity';
 $string['subplugintype_datafield'] = 'Database field type';
 $string['subplugintype_datafield_plural'] = 'Database field types';
 $string['subplugintype_datapreset'] = 'Preset';
@@ -407,6 +409,7 @@ $string['timemodified'] = 'Time modified';
 $string['todatabase'] = 'to this database.';
 $string['type'] = 'Field type';
 $string['undefinedprocessactionmethod'] = 'No action method defined in Data_Preset to handle action "{$a}".';
+$string['underconstruction_title'] = 'Under construction';
 $string['unsupportedfields'] = 'Unsupported fields';
 $string['unsupportedfieldslist'] = 'The following fields cannot be exported:';
 $string['updatefield'] = 'Update an existing field';

mod/data/pix/nofields.svg

@@ -0,0 +1,41 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="157 -1509 148 125" preserveAspectRatio="xMinYMid meet">
+  <defs>
+    <style>
+      .cls-1 {
+        clip-path: url(#clip-Activities);
+      }
+
+      .cls-2 {
+        fill: #eee;
+      }
+
+      .cls-3 {
+        fill: #c4c8cc;
+      }
+
+      .cls-4 {
+        fill: #fff;
+      }
+    </style>
+    <clipPath id="clip-Activities">
+      <rect x="157" y="-1509" width="148" height="125"/>
+    </clipPath>
+  </defs>
+  <g id="Activities" class="cls-1">
+    <g id="Group_42" data-name="Group 42" transform="translate(-268 -1985)">
+      <ellipse id="Ellipse_37" data-name="Ellipse 37" class="cls-2" cx="74" cy="14.785" rx="74" ry="14.785" transform="translate(425 571.43)"/>
+      <rect id="Rectangle_80" data-name="Rectangle 80" class="cls-3" width="94.182" height="110.215" transform="translate(451.909 476)"/>
+      <g id="Group_41" data-name="Group 41" transform="translate(467.043 493)">
+        <rect id="Rectangle_81" data-name="Rectangle 81" class="cls-4" width="44.456" height="5.625" transform="translate(21.16 0.549)"/>
+        <rect id="Rectangle_82" data-name="Rectangle 82" class="cls-4" width="33.342" height="5.625" transform="translate(21.16 11.652)"/>
+        <rect id="Rectangle_83" data-name="Rectangle 83" class="cls-4" width="44.456" height="5.625" transform="translate(21.16 30.772)"/>
+        <rect id="Rectangle_84" data-name="Rectangle 84" class="cls-4" width="33.342" height="5.625" transform="translate(21.16 41.875)"/>
+        <rect id="Rectangle_85" data-name="Rectangle 85" class="cls-4" width="44.456" height="5.625" transform="translate(21.16 61.291)"/>
+        <rect id="Rectangle_86" data-name="Rectangle 86" class="cls-4" width="33.342" height="5.625" transform="translate(21.16 72.393)"/>
+        <ellipse id="Ellipse_38" data-name="Ellipse 38" class="cls-4" cx="7.007" cy="7" rx="7.007" ry="7" transform="translate(0 0)"/>
+        <ellipse id="Ellipse_39" data-name="Ellipse 39" class="cls-4" cx="7.007" cy="7" rx="7.007" ry="7" transform="translate(0 31)"/>
+        <ellipse id="Ellipse_40" data-name="Ellipse 40" class="cls-4" cx="7.007" cy="7" rx="7.007" ry="7" transform="translate(0 61)"/>
+      </g>
+    </g>
+  </g>
+</svg>

mod/data/renderer.php

@@ -139,4 +139,42 @@ class mod_data_renderer extends plugin_renderer_base {
         $data = $presets->export_for_template($this);
         return $this->render_from_template('mod_data/presets', $data);
     }
+
+    /**
+     * Renders the action bar for the zero state (no fields created) page.
+     *
+     * @param \mod_data\manager $manager The manager instance.
+     *
+     * @return string The HTML output
+     */
+    public function render_zero_state(\mod_data\manager $manager): string {
+        $actionbar = new \mod_data\output\zero_state_action_bar($manager);
+        $data = $actionbar->export_for_template($this);
+        if (empty($data)) {
+            // No actions for the user.
+            $data['title'] = get_string('activitynotready');
+            $data['intro'] = get_string('comebacklater');
+        } else {
+            $data['title'] = get_string('startbuilding', 'mod_data');
+            $data['intro'] = get_string('createfields', 'mod_data');
+        }
+        $data['noitemsimgurl'] = $this->output->image_url('nofields', 'mod_data')->out();
+
+        return $this->render_from_template('mod_data/zero_state', $data);
+    }
+
+    /**
+     * Renders the action bar for an empty database view page.
+     *
+     * @param \mod_data\manager $manager The manager instance.
+     *
+     * @return string The HTML output
+     */
+    public function render_empty_database(\mod_data\manager $manager): string {
+        $actionbar = new \mod_data\output\empty_database_action_bar($manager);
+        $data = $actionbar->export_for_template($this);
+        $data['noitemsimgurl'] = $this->output->image_url('nofields', 'mod_data')->out();
+
+        return $this->render_from_template('mod_data/view_noentries', $data);
+    }
 }

mod/data/templates/view_noentries.mustache

@@ -0,0 +1,74 @@
+{{!
+    This file is part of Moodle - http://moodle.org/
+    Moodle is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    Moodle is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License
+    along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+}}
+{{!
+    @template mod_data/view_no_fields_nomanagers
+
+    Form containing all database presets displayed within a table.
+
+    Context variables required for this template:
+    * noitemsimgurl - The image url.
+    * importentriesbutton stdClass - Import entries single button to be rendered
+    * addentrybutton stdClass - Add entry single button to be rendered
+
+    Example context (json):
+    {
+        "noitemsimgurl": "https://moodlesite/theme/image.php/boost/mod_data/1535727318/nofields",
+        "importentriesbutton": {
+            "id" : "id1",
+            "method" : "get",
+            "url" : "#",
+            "primary" : false,
+            "tooltip" : "This is a tooltip",
+            "label" : "Button1",
+            "attributes": [
+                {
+                  "name": "data-attribute",
+                  "value": "no"
+                }
+            ]
+        },
+        "addentrybutton": {
+            "id" : "id2",
+            "method" : "get",
+            "url" : "#",
+            "primary" : true,
+            "tooltip" : "This is a tooltip",
+            "label" : "Button2",
+            "attributes": [
+                {
+                  "name": "data-attribute",
+                  "value": "yeah"
+                }
+            ]
+        }
+    }
+}}
+<div class="text-xs-center text-center mt-4" data-region="empty-message">
+    <img
+            src="{{noitemsimgurl}}"
+            alt="{{#str}} norecords, mod_data {{/str}}"
+            role="presentation"
+            style="height: 70px; width: 70px;"
+    >
+    <h5 class="h5 mt-3 mb-0">{{#str}} norecords, mod_data {{/str}}</h5>
+
+    <div class="mt-5 mb-0" id="action_bar">
+        {{#importentriesbutton}}
+            {{> core/single_button }}
+        {{/importentriesbutton}}
+        {{#addentrybutton}}
+            {{> core/single_button }}
+        {{/addentrybutton}}
+    </div>
+</div>

mod/data/templates/zero_state.mustache

@@ -0,0 +1,93 @@
+{{!
+    This file is part of Moodle - http://moodle.org/
+    Moodle is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    Moodle is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License
+    along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+}}
+{{!
+    @template mod_data/zero_state
+
+    Form containing all database presets displayed within a table.
+
+    Context variables required for this template:
+    * noitemsimgurl - The image url.
+    * importpresetbutton stdClass - Import preset single button to be rendered
+    * createfieldbutton stdClass - Create a new field single button to be rendered
+    * usepresetbutton stdClass - Use a preset single button to be rendered
+
+    Example context (json):
+    {
+        "noitemsimgurl": "https://moodlesite/theme/image.php/boost/mod_data/1535727318/nofields",
+        "importpresetbutton": {
+            "id" : "id1",
+            "method" : "get",
+            "url" : "#",
+            "primary" : false,
+            "tooltip" : "This is a tooltip",
+            "label" : "Button1",
+            "attributes": [
+                {
+                  "name": "data-attribute",
+                  "value": "no"
+                }
+            ]
+        },
+        "createfieldbutton": {
+            "id" : "id2",
+            "method" : "get",
+            "url" : "#",
+            "primary" : true,
+            "tooltip" : "This is a tooltip",
+            "label" : "Button2",
+            "attributes": [
+                {
+                  "name": "data-attribute",
+                  "value": "yeah"
+                }
+            ]
+        },
+        "usepresetbutton": {
+            "id" : "id3",
+            "method" : "get",
+            "url" : "#",
+            "primary" : false,
+            "tooltip" : "This is a tooltip",
+            "label" : "Button3",
+            "attributes": [
+                {
+                  "name": "data-attribute",
+                  "value": "perhaps"
+                }
+            ]
+        }
+    }
+}}
+<div class="text-xs-center text-center mt-4" data-region="empty-message">
+    <img
+            src="{{noitemsimgurl}}"
+            alt="{{{ title }}}"
+            role="presentation"
+            style="height: 70px; width: 70px;"
+    >
+    <h5 class="h5 mt-3 mb-0">{{{ title }}}</h5>
+    <p class="mt-3 mb-0">{{{ intro }}}</p>
+
+    <div class="mt-5 mb-0" id="action_bar">
+        {{#importpresetbutton}}
+            {{>core/single_button}}
+        {{/importpresetbutton}}
+        {{#createfieldbutton}}
+            {{>core/single_button}}
+        {{/createfieldbutton}}
+        {{#usepresetbutton}}
+            {{>core/single_button}}
+        {{/usepresetbutton}}
+    </div>
+</div>

mod/data/tests/manager_test.php

@@ -163,6 +163,32 @@ class manager_test extends \advanced_testcase {
         $this->assertNotEmpty($event->get_name());
     }
 
+    /**
+     * Test for has_fields().
+     *
+     * @covers ::has_fields
+     */
+    public function test_has_fields() {
+        $this->resetAfterTest();
+
+        $course = $this->getDataGenerator()->create_course();
+        $activity = $this->getDataGenerator()->create_module(manager::MODULE, ['course' => $course]);
+        $manager = manager::create_from_instance($activity);
+
+        // Empty database should return false.
+        $this->assertFalse($manager->has_fields());
+
+        // Add a field to the activity.
+        $datagenerator = $this->getDataGenerator()->get_plugin_generator('mod_data');
+        $fieldrecord = new \stdClass();
+        $fieldrecord->name = 'field1';
+        $fieldrecord->type = 'text';
+        $datagenerator->create_field($fieldrecord, $activity);
+
+        // Database with fields should return true.
+        $this->assertTrue($manager->has_fields());
+    }
+
     /**
      * Test for get_available_presets().
      *

mod/data/version.php

@@ -24,7 +24,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version   = 2022041900;       // The current module version (Date: YYYYMMDDXX).
+$plugin->version   = 2022071201;       // The current module version (Date: YYYYMMDDXX).
 $plugin->requires  = 2022041200;       // Requires this Moodle version.
 $plugin->component = 'mod_data';       // Full name of the plugin (used for diagnostics)
 $plugin->cron      = 0;

mod/data/view.php

@@ -72,14 +72,6 @@ comment::init();
 
 require_capability('mod/data:viewentry', $context);
 
-/// If we have an empty Database then redirect because this page is useless without data
-if (has_capability('mod/data:managetemplates', $context)) {
-    if (!$DB->record_exists('data_fields', array('dataid'=>$data->id))) {      // Brand new database!
-        redirect($CFG->wwwroot.'/mod/data/field.php?d='.$data->id);  // Redirect to field entry
-    }
-}
-
-
 /// Check further parameters that set browsing preferences
 if (!isset($SESSION->dataprefs)) {
     $SESSION->dataprefs = array();
@@ -247,6 +239,15 @@ $groupmode = groups_get_activity_groupmode($cm);
 $canmanageentries = has_capability('mod/data:manageentries', $context);
 echo $OUTPUT->header();
 
+if (!$manager->has_fields()) {
+    // It's a brand-new database. There are no fields.
+    $renderer = $PAGE->get_renderer('mod_data');
+    echo $renderer->render_zero_state($manager);
+    echo $OUTPUT->footer();
+    // Don't check the rest of the options. There is no field, there is nothing else to work with.
+    exit;
+}
+
 // Detect entries not approved yet and show hint instead of not found error.
 if ($record and !data_can_view_record($data, $record, $currentgroup, $canmanageentries)) {
     throw new \moodle_exception('notapproved', 'data');
@@ -385,6 +386,14 @@ if ($showactivity) {
             data_search_entries($data, $cm, $context, $mode, $currentgroup, $search, $sort, $order, $page, $perpage, $advanced, $search_array, $record);
         $hasrecords = !empty($records);
 
+        if ($maxcount == 0) {
+            $renderer = $PAGE->get_renderer('mod_data');
+            echo $renderer->render_empty_database($manager);
+            echo $OUTPUT->footer();
+            // There is no entry, so makes no sense to check different views, pagination, etc.
+            exit;
+        }
+
         $actionbar = new \mod_data\output\action_bar($data->id, $pageurl);
         echo $actionbar->get_view_action_bar($hasrecords);